Solve the problem.
Karen is driving a delivery truck on a straight road. The graph shows the distance y in kilometers that Karen is from Store A after x hours. (i) Find the slope-intercept form of the equation of the line. (ii) Use the graph to estimate the y-coordinate of the point 
that lies on the line.
A. y = 5x + 60; (6, 90)
B. y = -5x + 60; (6, 30)
C. y = 5x - 60; (6, -30)
D. y = -10x + 60; (6, 0)
Answer: B
Mathematics
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